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MarshalledTupleKeyEntity (Oracle - Berkeley DB Java API)
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com.sleepycat.bind.tuple</FONT>
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Interface MarshalledTupleKeyEntity</H2>
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<DL>
<DT><PRE>public interface <B>MarshalledTupleKeyEntity</B></DL>
</PRE>

<P>
A marshalling interface implemented by entity classes that represent keys as
 tuples. Since <code>MarshalledTupleKeyEntity</code> objects are instantiated
 using Java deserialization, no particular constructor is required by classes
 that implement this interface.

 <p>Note that a marshalled tuple key extractor is somewhat less efficient
 than a non-marshalled key tuple extractor because more conversions are
 needed.  A marshalled key extractor must convert the entry to an object in
 order to extract the key fields, while an unmarshalled key extractor does
 not.</p>
<P>

<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../com/sleepycat/bind/tuple/TupleTupleMarshalledBinding.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleTupleMarshalledBinding</CODE></A>, 
<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialMarshalledBinding.html" title="class in com.sleepycat.bind.serial"><CODE>TupleSerialMarshalledBinding</CODE></A></DL>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#marshalPrimaryKey(com.sleepycat.bind.tuple.TupleOutput)">marshalPrimaryKey</A></B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;keyOutput)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Extracts the entity's primary key and writes it to the key output.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#marshalSecondaryKey(java.lang.String, com.sleepycat.bind.tuple.TupleOutput)">marshalSecondaryKey</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;keyName,
                    <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;keyOutput)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Extracts the entity's secondary key and writes it to the key output.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#nullifyForeignKey(java.lang.String)">nullifyForeignKey</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;keyName)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clears the entity's secondary key fields for the given key name.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#unmarshalPrimaryKey(com.sleepycat.bind.tuple.TupleInput)">unmarshalPrimaryKey</A></B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A>&nbsp;keyInput)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Completes construction of the entity by setting its primary key from the
 stored primary key.</TD>
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<A NAME="marshalPrimaryKey(com.sleepycat.bind.tuple.TupleOutput)"><!-- --></A><H3>
marshalPrimaryKey</H3>
<PRE>
void <B>marshalPrimaryKey</B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;keyOutput)</PRE>
<DL>
<DD>Extracts the entity's primary key and writes it to the key output.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>keyOutput</CODE> - is the output tuple.</DL>
</DD>
</DL>
<HR>

<A NAME="unmarshalPrimaryKey(com.sleepycat.bind.tuple.TupleInput)"><!-- --></A><H3>
unmarshalPrimaryKey</H3>
<PRE>
void <B>unmarshalPrimaryKey</B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A>&nbsp;keyInput)</PRE>
<DL>
<DD>Completes construction of the entity by setting its primary key from the
 stored primary key.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>keyInput</CODE> - is the input tuple.</DL>
</DD>
</DL>
<HR>

<A NAME="marshalSecondaryKey(java.lang.String, com.sleepycat.bind.tuple.TupleOutput)"><!-- --></A><H3>
marshalSecondaryKey</H3>
<PRE>
boolean <B>marshalSecondaryKey</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;keyName,
                            <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A>&nbsp;keyOutput)</PRE>
<DL>
<DD>Extracts the entity's secondary key and writes it to the key output.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>keyName</CODE> - identifies the secondary key.<DD><CODE>keyOutput</CODE> - is the output tuple.
<DT><B>Returns:</B><DD>true if a key was created, or false to indicate that the key is
 not present.</DL>
</DD>
</DL>
<HR>

<A NAME="nullifyForeignKey(java.lang.String)"><!-- --></A><H3>
nullifyForeignKey</H3>
<PRE>
boolean <B>nullifyForeignKey</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;keyName)</PRE>
<DL>
<DD>Clears the entity's secondary key fields for the given key name.

 <p>The specified index key should be changed by this method such that
 <A HREF="../../../../com/sleepycat/bind/tuple/MarshalledTupleKeyEntity.html#marshalSecondaryKey(java.lang.String, com.sleepycat.bind.tuple.TupleOutput)"><CODE>marshalSecondaryKey(java.lang.String, com.sleepycat.bind.tuple.TupleOutput)</CODE></A> for the same key name will return false.
 Other fields in the data object should remain unchanged.</p>

 <p>If <A HREF="../../../../com/sleepycat/db/ForeignKeyDeleteAction.html#NULLIFY"><CODE>ForeignKeyDeleteAction.NULLIFY</CODE></A> was
 specified when opening the secondary database, this method is called
 when the entity for this foreign key is deleted.  If NULLIFY was not
 specified, this method will not be called and may always return
 false.</p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>keyName</CODE> - identifies the secondary key.
<DT><B>Returns:</B><DD>true if the key was cleared, or false to indicate that the key
 is not present and no change is necessary.</DL>
</DD>
</DL>
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